Means to attach a ring to pipe



Nov. 5, 1957 E. B. YEARGAN I 2,812,200

MEANS T0 ATTACH A RING TO PIPE Filed May 16, 1955 Iva/mix MEANS TOATTACH A RING T PIPE Ervin Beauregard Yeargan, Bakersfield, Calif.Application May 16, 1955, Serial No. 508,546

2 Claims. (Cl. 287--52.09)

This invention relates to a means whereby a ring or collar can beattached to the outside of pipe without rcquring the services of awelder or the like, as was the practice heretofore.

An object of my invention is to provide a novel means to attach a ringto pipe, whereby the ring can be quickly and easily mounted on theoutside of pipe so that the ring will not move longitudinally of thepipe, and thus providing a stop in one instance for a tool which mightotherwise slide along the pipe, or the ring may include a cleaning orscraping mechanism thereon for the purpose of scraping the inside ofadjacent pipe.

Still another object of my invention is to provide a novel means toattach a ring to pipe whereby the ring can be positioned between the topand bottom collars of a pipe centralizer, said ring being easilyattachable to the pipe after the centralizer is mounted thereon.

Still another object is to provide a novel means to attach a ring topipe which is simple in construction, effective in operation and whichwill effectively hold the ring against longitudinal movement on the pipeafter a setting mechanism has been released.

Other objects, advantages and features of invention may appear from theaccompanying drawing, the subjoined detailed description and theappended claims.

In the drawing:

Figure 1 is a side elevation of my ring attached to pipe and positionedbetween the collars of a pipe centralizer.

Figure 2 is a side elevation of my novel ring construction.

Figure 3 is a sectional view taken on line 3-3 of Figure 2.

Figure 4 is a fragmentary longitudinal sectional view of a modified formof ring construction.

Figure 5 is a longitudinal sectional view of the ball retaining tube ofthe type utilized in Figure 4.

Figure 6 is a fragmentary side elevation with parts broken away andillustrating the use of my ring as a scraper.

Referring more particularly to the drawing, the numeral 1 indicates apipe or tubing upon which my ring 2 is mounted. As shown in Figure 1 thering 2 may be used as a stop in connection with a pipe centralizer 3consisting of upper and lower collars 4-5, respectively, and bowedspring arms 6 mounted on and extending between the collars 4-5. Thecentralizer 3 is used for the purpose of holding the pipe 1 in thecenter of a bored hole, or within casing, and since the collars 4-5 areloosely mounted on the pipe 1 the centralizer could move longitudinallyof the pipe as the pipe string is lowered into the Well. To prevent thislongitudinal movement of the centralizer 3 it is necessary to use a ringsuch as my ring 2 as a stop, and the ring is positioned between thecollars 4-5 and surrounding the pipe 1, substantially as shown in Figurel.

The ring 2 consists of two complementary arcuate sections 78 which, whenattached together, encircle the pipe 1. The ring sections 78 are securedtogether at 7 2,812,200 Patented Nov. 5, 1957 diametrically oppositepoints by means of loose pins 9, which pins extend through a hinge-likestructure formed on each of the sections 78, as shown. The pins 9 can bereadily removed in order to permitthe sections 78 to be assembled on thepipe 1. The ring 2, as thus far described, is assembled on the pipe 1.How- 1 ever, a means must now be provided to prevent the ring frommoving longitudinally on the pipe. This is accomplished as follows:

A pair of vertically extending channels 11-12 are formed on the section8 of the ring 2. The channels 11-12 taper inwardly towards the upper andlower edges of the ring 2, respectively, and these channels are open onthe inside and define a tapered enclosure with the outer surface of thepipe 1. Between the channels 11- 12 I provide a tube 13, which may be anintegral part of the section 8 and of the channels 1112, or it may be aseparate part, as will be subsequently described. A pair of balls 14-15are positioned within the tube 13 and are pressed outwardly by thespring 16. The balls 14- 15 are held within the tube 13 by a key 17which extends through appropriate holes in the tube 13, and above andbelow the balls 1415, respectively. In this position of the key 17 thespring 16 is compressed, the balls are held within the tube 13 and thering 2 can be readily fitted onto the pipe 1. By withdrawing the key 17the balls 14-15 are free to move upwardly and downwardly, respectively,and urged by the spring 16. The halls then move into the channels 11-12,respectively, and the tapered walls of these channels will guide theballs 1-4 15 against the outer surface of the pipe 1, thus wedging theballs against the outer surface of the pipe and against the taperedwalls of the channels 1112. Thus the ring 2 will be securely attached tothe pipe 1 and will be immovably held thereon. If desired the tube 13can be a separate tube, as shown at 18, and this tube will contain theballs 14-15, as shown in Figure 5. The channels 1112 are then open attheir inner ends providing an appropriate space 19 in which the tube 18can fit. The key 17 releases the balls 1415 in the same manner aspreviously described, and the ring 2 will be mounted on the pipe 1 inthe same manner as described above.

In Figure 6 I have shown the ring 2 constructed as a scratching orscraping tool, in which wire fingers 20 are fixedly mounted on the outersurface of the ring 2 and project therefrom, so that these fingers canscrape or scratch the inside surface of pipe for the purpose of cleaningthe same. The ring 2 is held onto the actuating pipe in the same manneras previously described. It is thus evident that the detachable ring 2can be used not only as a stop, but also as a cleaning tool, if desired.

Having described my invention, I claim:

1. A ring attachment to a pipe, said ring surrounding the pipe, the ringhaving a recess in the side thereof and a tube positioned in saidrecess, vertical channels in the ring extending upwardly and downwardlyfrom said recess and from the tube therein, said channels being taperedtowards the pipe and defining an inclosure with the outer surface of thepipe, said tube being open at both ends thereof, a pair of balls in saidtube, spring means in the tube engaging both of the balls to press thebails outwardly and into each of said channels, and means releasablyengaging the balls to retain the balls within the tube.

2. A ring attachment to a pipe, said ring surrounding the pipe, saidring having a recess in the side thereof and a tube removably positionedwithin the recess and adjacent the pipe, said tube being parallel to thepipe, vertical channels in the ring extending upwardly and downwardlyfrom said recess and the tube therein, said channels being taperedtowards the pipe and defining an inclosure with the outer surface of thepipe a pair of balls in said tube,

a spring within the tube engaging both of the balls to press said ballsoutwardly into said channels, and means extending through the. tube andenggxging the bglls tp retain the balls within the tube and-with thespring corn- 5 pressed. 7

References Cited in the file of this pa'tent UNITED STATES PATENTS180,304 Yocom -H July 25, 1876 10 4 Peck Sept. 4, 1888 Fischer July 2,1912 Goldsmith Apr. 22, 1924 Yannetta Dec. 1, 1936 Frederick Dec. 21,1954 FOREIGN PATENTS Canada May 9, 1950

